"(A)lthough no other human activity pushes individual emission levels as fast and as high as air travel, most of us don't stop to think about its carbon impact," Roger Tyers, an environmental sociologist at University of Southampton, wrote at The Conversation in 2017.

Days after the Air Charter Service report, the World Economic Forum claimed that only 135 roundtrip private flights will service Davos this week, which is 14% fewer flights than the 2018 conference. However, the WEF sourced that number from two airports near Davos, where the Air Charter Service analyzed four airports near the conference.

Children pump water at the last tap with running water in their village after water to the other communal taps were cut off due to drought in Masotsheni, north of Durban, South Africa, January 22, 2016. REUTERS/Rogan Ward

Despite the causalities that climate change have already caused, and are slated to foster in the coming decades, private jets at Davos are becoming more common and more ostentatious.

"There appears to be a trend towards larger aircraft, with expensive heavy jets the aircraft of choice, with Gulfstream GVs and Global Expresses both being used more than 100 times each last year," Andy Christie, private jets director at the ACS, told The Guardian.

The reason? Christie said Davos attendees are preferring more and larger private planes "possibly due to business rivals not wanting to be seen to be outdone by one another."

The WEF said it offsets all carbon emissions from air travel to and from Davos — whether it's private or commercial.